DE102021101063A1 - Mouth and nose mask and method for the production thereof - Google Patents

Abstract

The object of the invention is to provide a mechanical method and a mouth-nose mask for protection against infection and work, which, due to its design and material selection, represents an optimum in terms of production and handling as well as filter-technical values. The mouth-nose mask according to the invention (1) consists of a non-woven fabric (8) in a one-piece design with an integrated protective area for the mouth and nose with a nose area (3) and with oval cutouts (6) for the ears and ear holders (7) surrounding the oval cutouts (6). The basic shape of the mask (1) consists of an oval (5) with a width to height ratio of preferably 2:1. The oval (5) extends on the lower side of the mask (1) from the area of the left ear holder (7) over a chin area (2) to the area of the right ear clip (7). In the nose area (3), the upper edge of the nose covering deviates from the oval (5) by being set back by preferably 12.5%. For the eyes, it has rounded recesses in the direction of the chin area (2) as the eye area (4) between the nose area (3) and the ear cutout (6). Manufacture by complete formation of the mask (1) by cutting it out of a web of material in a single operation, which can be printed specifically personalized beforehand in a special preliminary process. The special features of the non-woven fabric (8) used are that it is wrinkle-free, non-fraying, washable and printable, guaranteeing easy handling for use, which allows it to be attached with just one hand to attach it to the ears through ear cutouts (6), as well as that Drop.

Description

The subject matter of the present invention is a mouth and nose cover for protection against infection and work and its production.

The special features of the invention lie in the flat, one-piece design made from an elastic non-woven fabric and the mechanical production by completely forming the mask by cutting it out of a material web in a single operation, which can be specifically printed in a preliminary process, so that the printed image can be placed in a defined manner can.

The special features of the nonwoven used are that it is wrinkle-free, does not fray, and is washable and printable.

Another special feature is the easy handling for use, which allows you to put it on with just one hand to attach it to the ears using the ear cutouts.

The term mask "masḫara" comes from Arabic and means a face covering. It is used for disguise and costuming, such as in the theater, in art performances, as well as for ritual and religious purposes. She also stands for teasing, fool, farce and joke. Originally, masks or larvae were described as plastic structures made of natural materials such as plant parts, leather, wood, clay or cloth worn in front of the face. The general covering of the body with half masks or full-body masks is also referred to as a masquerade. Currently, masks are mainly made of plastics. A mask can fulfill very different tasks in different contexts.

Protective masks, on the other hand, are primarily used to protect the face or parts of it, such as eyes, skin, mouth, nose and ears and then the respiratory tract and lungs. This enables protection against foreign substances such as chemicals, heat, cold, dust, splinters or excessive light (which occurs, for example, during welding), but also against the inhalation and exhalation of droplets (aerosol). Breathing masks and medical mouth and nose protection are typical here.

Protective masks can be differentiated according to application, such as mechanical protective masks, breathing masks, sports masks, infection protection masks, mouth and nose covers, etc.

Masks of different types in terms of shape, number of layers, material and attachment to the head, which serve to protect against infection, are generally known as the state of the art for mouth and nose covers. Many are only disposable items, reusable mouth-nose masks avoid waste. Various types in different designs and different materials or material configurations are available on the market for this purpose.

The font DE 20 2020 001 576.8 shows a one-piece, rectangular mouth-nose mask with a contour section for the nose protruding from a rectangle, with a fastening means in the head area, with an insertion area for an insertion element for a nose shaper, with a fastening strap. Holes for tape and outer contour are edge-reinforced. A logo or lettering is printed on the surface.

DE 20 2020 001 769.8 describes a rectangular, sewn mask made of several layers (five to seven), which is open at the side in order to insert a copper fleece insert that can be removed again. The mask has a stainless steel nose clip for nose adjustment, is held in place with rubber bands and is washable at 60 to 90 degrees C.

DE 20 2020 101 781.0 shows a sewn mask that can be washed up to 60 degrees C and consists of at least two textile layers with a nose clip and fastening straps.

DE 20 2020 101 942.2 describes a washable trapezoidal mask with a central seam to form a concave or convex shape.

With DE 20 2020 102 140.0 describes a one-piece mask in the shape of a butterfly with fastening means and a fold line between the mouth and nose area. The mask is formed by inserting tabs on both sides with a raster nose into the slots provided for this purpose. The fastening device is also provided in the tuck-in strap system with a sawtooth profile for size adjustment. Paper with a basis weight of 300 g/sqm is defined as the material.

DE 20 2020 102 509.0 shows a one-piece mask made of paper as a stamped part for exclusive use by people who wear glasses. The individual versions show different attachments to the temples of the glasses. It is provided with a mouth and nose part as well as a fastening element as a spectacle leg and with spectacle slits. Paper with a basis weight of 300 to 400 g/sqm is defined as the material.

DE 20 2020 103 777.3 proposes a one-piece, die-cut, disposable mask made from printable virgin fiber pulp containing 40% grass. A kind of wing contour with a center line and diagonal grooves as well as slits as a plug-in closure forms through Fold and tuck in the mask shape. It lies flat for transport and can be opened in three dimensions. It is held in place by rubber bands that can be used interchangeably for several masks in the pack.

DE 20 2020 103 777.3 refers to an ultrasonically welded mask made of several layers, in particular polyester and polypropylene or fleece, which can be printed on.

DE 20 2020 101 959 describes cardboard or paper as the material used, which has been folded together to form an infection protection mask using grooves and a plug-in system. Ear hooks with a hole cut-out are available in the blank for mounting. The material should be disinfectant impregnated or varnished. The ear hooks are made in one piece with the mask body.

DE 60 326 166.3 identical with EP 1 575 388 B1 (Priority US325247 ) describes a method for producing one-piece protective masks from a multi-layer material web by stamping and embossing. The mask consists of a main part and a stretchable extension part for the user's head. A holder, for example for the ear, is produced by punching or embossing an opening in the respective extension part. The webs of material are perforated several times in the web of material between the masks for separation by tearing. At least three masks are provided in the width of the material web during production. A dispensing device for masks from the cylindrical roll is also described.

DE 20 2020 102 147.8 shows a one-piece mask made of material that can be punched and scored, such as paper and cardboard or corrugated cardboard or plastic with fastening tabs.

DE 20 2020 102 419.1 discloses a one-piece mask of rigid material in a rectangular shape, such as fleece, with pre-cut perforations for attachment over the ears. It consists of a non-woven fabric made from cellulose and synthetic fibers using a wet-laid process. The ears are perforated in a heart shape, and there are cut-outs for the eyes.

Through DE P 37 50 816.4 describes a mask made of impermeable and stretchable material for liquids and solids (surgical latex sheet) with circumferential support for the top and bottom of the head, which fits snugly against the head. The bracket allows a free ear area. An integrated tube-like conduit to the nostrils ensures nasal breathing. The line device is equipped with a filter device. The mouth area has a bulge.

EP 0 776 616B1 with priority JP 31278195 describes a multi-piece, disposable mask made from stretchable and weldable nonwoven fibrous fabrics of varying thicknesses/stiffnesses for covering the wearer's mouth and nose, with attachment around the wearer's ears.

JP 2008000191A shows a multi-part mask with ear attachments, which is welded in two places to get its useful shape.

DE P 2 322 042.0 identical with U.S. 3,886,597 shows a method which, in its simplest form, produces a one-piece mask contour with ear attachments cut out of porous web material (foam) by means of a stamping iron.

The font U.S. 4,790,307 describes a multi-layer mask made of different fabrics and parts, especially in the middle of the mouth and nose. It has an ear attachment.

EP 1 575 388 (Priority U.S. 325,247 ) shows one-piece masks with two different ear attachments by closed or open loops. The process involves punching out several masks next to each other from a web.

With U.S. 4,084,585 and U.S. 4,195,629 masks with ear holders are known.

Through the Scripture U.S. 6,615,838 describes a one-piece mask with ear support, which, however, still has to be welded in order to be operational.

US2005/0172968 shows a multi-layer mask made of several parts with ear mounts.

US2008/0035153 describes a method of making one-piece, rectangular masks from an ear-mount web and providing them on a roll for dispensing the masks.

Through US2015/0173436 a mask made of several parts with ear holders is known.

WO 2004/060090 shows a mask dispenser for one-piece masks with ear holders.

WO 2011/109327 and WO 2013/036769 show a multi-layer one-piece mask with ear holders and the manufacturing process for it.

The object of the invention is to provide a machine method and a mouth-nose mask for To provide protection against infection and work, which represents an optimum in terms of production and handling as well as filter-technical values due to its design and material selection.

According to the invention, the object is achieved by a mask and a production method according to claim 1. Advantageous subclaims are disclosed in the dependent subclaims. Preferred developments of the invention result from the combinations of the claims or individual features thereof.

The mouth-nose mask according to the invention is made in one piece and has an oval basic embodiment, so that both the protective and the holding function are integrated into it. This oval has no cut-outs in the chin, mouth and nose area and has rounded cut-outs between the nose and ears in the upper area for the eyes. The top edge of the nosepiece is set back slightly inward from the oval, "destroying" the oval. Slightly slanted oval recesses are available on the more pointed oval ends of the mask for attachment to the ears. Due to the mechanical manufacturing process, the masks are completely formed and reproduced in the oval and realized in a single operation by special cutting out of a material web.

The oval has a width to height ratio of 2.3:1.0 to 1.9:1.0, preferably 2.0:1.0. The top of the nosepiece is recessed from 1% to 15%, preferably 12.5%.

To protect against infection and work, the mask is made of an elastic non-woven fabric, preferably knitted from polyester, preferably with a basis weight of 155 g/m², an air permeability of 547 l/m² and a retention rate of 3 µm particles with 81% and the size 1 µm with 79%.

The non-woven fabric used has the following special features: the stretch character, crease resistance, non-fraying, washability and printability.

Advantages of the mask according to the invention are the simple handling of the mask during use, which allows it to be put on with just one hand to attach it to the ears through defined ear cutouts, and also to be removed. Due to the stretch character of the material, which is 15% to 30%, preferably 25%, the mask fits well on the face without being extremely tight. If the mask is too wide, it can be shortened by turning one or both ear mounts once or several times, so that the mask is also suitable for children without any additional effort.

The manufacturing process also allows personalized printing on the mouth-nose mask.

The special features of the invention and the manufacturing process lie in the flat, one-piece design made of an elastic non-woven fabric and the machine production by complete formation of the mask by machine cutting out of a material web in a single operation, which can be specifically printed in a special preliminary process.

The manufacturing process for the personalized production of the mouth-nose masks is divided into three detailed steps and is based on the processing of rolled goods. First, the motifs are digitally printed inverted on a paper web with water-based ink according to ecological standard requirements and pre-dried in a dryer to avoid abrasion during further processing. The paper is special transfer paper that absorbs the ink well during the printing process and dries quickly, and releases the required amount of ink again during calendering. The ink then has to be transferred from the paper web to the nonwoven and fixed in a calender by evaporation. The paper web and the nonwoven are laid on top of each other without any creases, clamped in the machine and continuously calendered with sufficient pressure, a temperature of approx. 195 degrees C and a fixing time of 50 s. This processing is the sublimation printing process. In the last processing step, the non-woven web is pulled onto the cutting machine with a flat work surface of approx. 3 m x 3 m. A suitable negative pressure prevents the material from slipping at high processing speeds. The position of all masks on the workspace already mentioned can be determined using previously printed markings. The mouth-nose masks are then completely cut out of the elastic non-woven fabric using a cutting module that guides a decagonal, rotating blade. This cutting module ensures low pushing forces on the material and precise cutting edges.

• 1 die erfindungsgemäße Mund-Nasen-Maske im Grund-Oval und
• 2 eine Materialbahn mit einer Nutzenverteilung.

Advantageous exemplary embodiments of the invention are explained in more detail with reference to the drawing. Show it:

• 1 the mouth-nose mask according to the invention in the basic oval and
• 2 a web of material with a benefit distribution.

A preferred embodiment of the mouth and nose mask 1 is in 1 shown. The mask 1 is made in one piece and has an overall oval basic shape 5, ie the mask 1 is derived from an oval 5 in terms of construction. The oval 5 has a preferred ratio of width to height of 2:1, both the protective function for the nose and mouth and the holding function are integrated into it, the ear holder 7 as a material strip between the oval ear cutout 6 for the ears and the outer edge of the pointed ends of the oval 5. The chin area 2 corresponds to the lower area of the oval 5. From the upper edge of the oval 5, the nose edge in the nose area 3 of the mask 1 was set back by approx. 12.5% from the oval 5 in the direction of the chin area 2. Recesses 4 between the nose area 3 and the ear cutout 6 are provided for the eyes on the right and left of the nose area 3 in the direction of the chin area 2 . Apart from the ear cutouts 6, the mask 1 has no openings or cutouts.

Slightly inclined oval cutouts 6 are available at the pointed ends of the ovals 5 of the mask 1 to hold the mask 1 on the ears. This inclination 9 or inclination 9 of the central axis 10 of the oval section 6 to the vertical 11 is preferably 12 degrees. The narrow edge of material between the ear cutout 6 and the outer edge of the oval 5 forms the ear holder 7. The masks 1 are completely formed and reproduced in the oval 5 by the mechanical manufacturing process and are realized in a single operation by special cutting out of a web of material.

the 2 shows a section of a nonwoven web 8 with symbolically drawn masks 1. Furthermore, in 2 a so-called pool with 8 x 13 masks 1, i.e. a total of 104 masks 1, is shown on a material area of 2960 mm x 2080 mm.

The manufacturing process of the mouth and nose masks 1 is divided into three steps and is based on the processing of rolled goods. First, the motifs are digitally printed in reverse on a paper web with water-based ink according to ecological standard requirements and pre-dried in a dryer to avoid abrasion during further processing. The paper is a special transfer paper that absorbs the ink well during the printing process and dries quickly, and releases the required amount of ink again during calendering. The ink must then be transferred from the paper web to the nonwoven web 8 and fixed in a calender by evaporation. For this purpose, the paper web and the nonwoven 8 are laid one on top of the other without any creases, clamped in the machine and continuously calendered with sufficient pressure, a temperature of 195 degrees C and a fixing time of 50 s. In the last processing step, the nonwoven web 8 is drawn onto the cutting machine with a flat work surface of approximately 3 m×3 m. A suitable vacuum prevents the material from slipping at high processing speeds. The position of all masks 1 on the work surface already mentioned can be determined using previously printed markings. The mouth and nose masks 1 are then completely cut out of the elastic nonwoven 8 with the aid of a cutting module which guides a decagonal, rotating blade. This cutting module ensures low pushing forces on the non-woven fabric 8 and precise cutting edges. There is no fraying of the cut edges.

Reference List

1

- Mouth and nose mask, mask

2

- Chin area

3

- nose area

4

- Eye area

5

- Oval

6

- Ear cutout, oval cutout for mounting on the ears

7

- Ear holder

8th

- non-woven web, non-woven fabric

9

- Inclination, inclination

10

- central axis

11

- Vertical

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 202020001576 [0009]
• DE 202020001769 [0010]
• EN 202020101781 [0011]
• EN 202020101942 [0012]
• EN 202020102140 [0013]
• EN 202020102509 [0014]
• DE 202020103777 [0015, 0016]
• EN 202020101959 [0017]
• DE 60326166 [0018]
• EP 1575388 B1 [0018]
• US 325247 [0018, 0026]
• EN 202020102147 [0019]
• EN 202020102419 [0020]
• EN P3750816 [0021]
• EP 0776616 B1 [0022]
• JP 31278195 [0022]
• JP 2008000191A [0023]
• EN P2322042 [0024]
• US3886597 [0024]
• US4790307 [0025]
• EP 1575388 [0026]
• US4084585 [0027]
• US4195629 [0027]
• US6615838 [0028]
• US 2005/0172968 [0029]
• US2008/0035153 [0030]
• US2015/0173436 [0031]
• WO 2004/060090 [0032]
• WO 2011/109327 [0033]
• WO 2013/036769 [0033]

Claims (9)

Mouth and nose mask (1) for protection against infection and work, consisting of a nonwoven fabric (8) in a one-piece design with an integrated protective area for the mouth and nose with a nose area (3) and with oval cutouts (6) for the ears and the oval cutouts (6) surrounding ear holders (7), characterized in that the basic shape of the mask (1) consists of an oval (5) with a ratio of width to height of 2.3: 1.0 to 1.9: 1.0, preferably of 2.0:1.0 and the oval (5) on the underside of the mask (1) extends from the area of the left ear holder (7) through a chin area (2) to the area of the right ear holder (7), however in the nose area (3) the upper edge of the nose covering deviates from the oval (5) by being set back by 1% to 15%, preferably by 12.5% and recesses rounded off for the eyes in the direction of the chin area (2) as the eye area (4) between the nose area ( 3) and ear cutout (6). mask (1) after claim 1 , characterized in that the oval cutouts (6) contained in the one-piece basic format are arranged obliquely as a holder on the ears of the mask wearer, the central axis (10) of the oval cutout (6) having an inclination (9) of 10 degrees to 15 degrees, preferably 12 degrees, to the perpendicular (11). mask (1) after claim 1 and 2 , characterized in that the mask (1) consists of an elastic non-woven fabric (8), preferably knitted from polyester, with a preferred basis weight of 155 g/m², an air permeability of 547 l/m² and retention of particles with a size of 3 µm with 81% and the size 1 µm with 79%. Mask (1) according to one of the preceding claims, characterized in that the non-woven fabric (8) is washable and printable, advantageously personalized printable, and has the characteristics of a stretch character, freedom from creases and the properties of non-fraying. Mask (1) according to one of the preceding claims, characterized in that due to the stretch character of the non-woven fabric (8), which is 15% to 30%, preferably 25%, the mask (1) can be placed well on the face and is adjustable in width by rotating one or both ear holders (7) through 180 degrees once or several times. Manufacturing process of the masks (1) according to claim 1 until 5 , characterized in that the masks (1) are made in a flat one-piece design from a very elastic non-woven fabric (8) in a single operation, the non-woven fabric (8) being tensioned and held by vacuum technology in order to cut the masks (1) with a specific cutter cut out completely with their ear cutouts (6). Manufacturing method for masks (1) according to claim 6 , characterized in that the process for the personalized production of the mouth and nose masks (1) is divided into three steps and preferably relates to the processing of rolled goods, with the motifs in digital printing being reversed on a paper web with water-based ink in the first step ecological standard requirement is printed and pre-dried by a dryer, then the ink is transferred from the paper web in a calender by evaporation to the non-woven fabric (8) with simultaneous fixation, the paper web and the non-woven fabric (8) are laid on top of each other wrinkle-free, in the Machine clamped and calendered continuously with sufficient pressure, a temperature of 195 degrees C and a fixing time of 50 s and finally the nonwoven web (8) is pulled onto the cutting machine with a flat work surface of approx. 3m x 3m, with a suitable Negative pressure prevents the material from slipping at high processing speeds This is prevented and the position of all masks (1) on the aforementioned work surface can be determined by means of previously printed markings and the mouth and nose masks (1) are then completely cut out of the elastic nonwoven fabric (8) using a cutting module. Manufacturing method for masks (1) according to claim 6 and 7 , characterized in that a cutting module is used, which leads to a decagonal, rotating blade. Manufacturing method for masks (1) according to claim 6 until 8th , characterized in that the non-woven fabric (8) is specifically printed in a special pre-process prior to the manufacturing process for masks (1).

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